Air-line oiler



Dec. 2, 1.930, E, RENFER 1,783,522

A1B-LINE 011m Filed Dec. 14, 1925 Patented Dec. 2, 1930 VuNrrED NSTATES PATsNr oprima:y

JOHN E. RENFER, or" CLEVELAND, omo, AssIeNoR 'ro THE CLEVELAND ROCK DRILL 'Coi/irANY, or CLEVELAND, onro AIR-LINE CILER The present invention is directedv to iinprovements in air line oilers, and moreparticularly to improvements in air line oilers of the type disclosed in my prior. application Serial No. 295,668, liled July 27, 1928. Y The' primary object of the invention is to provide a 'device 'of this character so constructed that the` flow of oil from thereservoir can be conveniently regulated. Y

Another object of the invention is to provide a device of this nat-ure Constructed in such manner that a supply of oil will'flow from the reservoir and commingle with the pressure fluid iowing to the drill regardless 1.5 of the position assumed by the reservoir.

Another object of the invention is to pro-1 vide a device of this type primarily designed for use in connection'with percussive drills in order that an adequate supply of oil will be 2c carried with the pressure iiuid 'into the drill to effectively lubricate the working parts thereof.

In the accompanying drawing z- Figure 1 is a longitudinal sectional view through the device. A Figure 2 is a face view of the member. v Referring to the drawing, 1 designates a casing which consists of a pair of opposedv sections 2 and 3, which are preferably threaded, as at 4, to permit the same to be conveniently connected or disconnected.

rl`he sections 2 and 3 are hollow so that when they are connected a reservoir 5 is produced for receiving oil, there being a lilling opening 6 formed in the section 2 and normally closed by a screw plug 7 The outer ends of these sections are provided, respectively, with sockets Sand 9, in which the pipe sections 10 and 11 respectively are engaged,-said pipe sections serving. as means for attaching the casing in the air line.

Formed integral with the said sections 2 and 3 are tubes 12 and 13, which are alined with the pipe sect-ions 10 and 11 in order that e an axial air passage will extend through the casing 1, and which are of such diameter that ample space will be provided therearound for containing oil. The opposed ends of the tubes 12 and 13 are beveled, as at 14, the purpose of which will be later explained.

A fabric member 15 is arranged in the cas- 1"" ing to feed oil from the Areservoir into the air stream passing through the alined tubes v12 and 13. This member consists of a circular body 16 having a central aperture 17 `and peripheral extension 18.1 The latter extend in opposite directionsfrom the body 16 and are arranged to lie along the'inner surface of the casing substantially throughout the length thereof. vBetween certain of the extensions the periphery of the body 16 is formed with notchesV 19, in order to permit oil Vto flow from one side thereof to the other.

Vhen the sections 2 and 3 are secured together, the beveled, ends 14 of the tubes 12 and 13 engage the body 16 around the aperture 17 and clamp thesame in position.`

The opposed ends of the tubes 12 and 13 are provided withannular recesses 21 in which are fitted compressible gaskets 22 and against which are engaged the ends of the sleeve 23,. said sleeve passing through the opening 17 of the body 16. The sleeve bridges the space between the ends of the tubes and is provided with an annular groove 24 into which opensthe port 25 leading from the interior of the-sleeve. r

It will'be apparent that sleeves may be provided wherein the size of the port varies in order that the flow of oil may be Conveniently regulated by interchanging the sleeves.

`Brieiy the operation is as follows Some pressure fluid` passing through'the alined tubes will pass through the port 25 and seep through the bodies 16, thus building up pressure in the reservoir 5. Upon admission Aof pressure fluid into the drill, a slight drop` in .pressurewill occur in the air line, :and consequently the fluid in the reservoir will expand. This expansion will force oil fromthe bodyl`16, through the port 25 to `commingle with, the pressure fluid stream passing through the tubes in order that it Vwill be carried to the drill to lubricate the working parts thereof- 4 Owing to the presence of the extensions 18 the body will be thoroughly saturated with oil,l and owing totheir capillary properties,

fa supply of oil will be maintained at a point to positively mix with the incoming pres- MUA ein

sure fluid. Should the flow of oil be too great or too little the sleeve can be removed and one substituted having` the proper size Jort.

l It will be apparent that even if the supply of oil in the reservoir be low, a suicient quantity will be fed by capillary attraction in the path of llow of pressure fluid to be carried therewith to the drill, regardless of the position of the reservoir, since at all times parts of the extensions 18 or body 16 will be submerged in oil.

Although the foregoing description is necessarily of a detailed character in order to completely set forth Athe invention, it is to be understood that the specific terminology employed is not to be construed as restrictive or confining, and that various modifications and rearrangements of parts may be resorted to without departing from the scope or spirit of the invention as defined in the following claims.

that is claimed is :d

l. An air line oiler comprising a casing constituting an oil reservoir, tubes disposed within the casing for the passage of pressure iiuid, a sleeve having an internal diameter as great as the internal diameters of said tubes interposed between the opposed ends of the tubes, said sleeve having a port therein affording communication between the sleeve and reservoir, and a fabric body engaged between the tubes and around the sleeve.

2. An air line oiler comprising a casing constituting an oilreservoir, tubes disposed within the casing and having their opposed ends spaced, a sleeve having its ends fitted in the opposed ends of said tubes, said sleeve having a port therein opening into the reservoir, a fabric body clamped between the ends of the tubes and surrounding the sleeve for conducting oil from the reservoir to the port for discharge into the tubes.

3. An air line oiler comprising a casing constituting aY reservoir, tubes extending from the ends of the reservoir for passage of pressure fluid through the reservoir, the opposed ends of said tubes having annular recesses therein, a sleeve having its ends iitted in the recesses, said sleeve havingran annular grove formed therein vand a port communicating with the groove, and a fabric body engaged between the tubes and surrounding the sleeve for conducting oil, by capillary attraction from the reservoirto the port for discharge into the sleeve.

4.. An air line oiler comprising a casing constituting an oil reservoir, tubes disposed within the reservoir and having their opposed ends spaced, said opposed ends having recesses therein, compressible gaskets seated in the recesses, a sleeve disposed between the tubes and having its ends engaged in the recesses and with the gaskets, and a fabric body clamped between the tubes and surrounding the sleeve, said sleeve having a port therein confined by the body.

5. An air line oiler comprising a casing constituting an oil reservoir, tubes extending from the ends of the reservoir for passage of pressure fluid, a sleeve fitted between the ends of the tubes, a fabric body engaged on the sleeve and between the tubes, said body having a plurality of extensions formed thereon and extending in opposite directions within the reservoir, said sleeve having a port therein and confined within the body.

6. An air line oiler comprising an air conduit, an oil reservoir surrounding said conduit, said air conduit having a metered oritice therein communicating with said reservoir, and capillary means for maintaining oil at said orifice irrespective of the posit-ion of said reservoir or the quantity of oil therein.

7. An air line oiler including an air con duit, an oil reservoir, and arcapillary `body for conducting oil from said reservoir to said conduit, said body7 including a central portion having oppositely extending peripheral extensions.

8. In an air line oiler, a pair of spaced conduits, a sleeve interposed between said conduits, and a fabric body disposed around said sleeve and clamped between said conduits.

In testimony whereof I affix my signature.

i JUHN E. RENFER.

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